altostratus

(ăl'tō-strā'təs, -străt'əs)
n.
An extended cloud formation of bluish or gray sheets or layers.

[Latin altus, high + STRATUS.]

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A grayish or bluish cloud sheet or layer of striated, fibrous, or uniform appearance; totally or partially covering the sky; and having parts thin enough to reveal the sun at least vaguely. Altostratus does not show halo phenomena. On weather charts, altostratus clouds are represented by the symbol .

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For a list of words related to altostratus, see:

• Clouds - altostratus: dark, drab, thin cloud streaks at middle altitudes

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See words rhyming with "altostratus."